Security readout for executives and security teams
Plain-English summary
Azure Data Explorer may expose sensitive information over the network to an unauthorized attacker. Exploitation requires user interaction, but no prior privileges are indicated. The expected impact is loss of confidentiality; the supplied scoring data indicates no direct integrity or availability impact.
Executive priority
Treat this as a high-priority confidentiality issue for organizations handling sensitive information in Azure Data Explorer. Assign ownership immediately, establish applicability through Microsoft guidance, and track remediation. Escalate deployments containing regulated, customer, credential, or commercially sensitive data.
Technical view
This CWE-200 information-disclosure issue is network-accessible, low complexity, requires no privileges, and requires user interaction. The CVSS 3.1 vector indicates changed scope and high confidentiality impact, with no integrity or availability impact. The supplied data does not identify affected versions or disclose the vulnerable component.
Likely exposure
Organizations using Azure Data Explorer may be exposed, but the source bundle provides no affected version range, configuration criteria, or CPEs. Determine applicability from Microsoft’s advisory and the organization’s Azure inventory rather than assuming every deployment is vulnerable.
Exploitation context
The CVSS vector reports proof-of-concept exploit maturity. However, the CVE is not listed as KEV in the supplied bundle, and no cited evidence establishes active exploitation. User interaction is required, but its exact form is not described.
Researcher notes
Public details are limited. The record identifies CWE-200 and provides risk characteristics, but no affected versions, vulnerable component, disclosure mechanism, indicators, or concrete fix details. The changed-scope result and required interaction warrant investigation, but they do not establish compromise or universal exposure.
Mitigation direction
- Review Microsoft’s CVE advisory for current service-specific remediation or mitigation guidance.
- Apply Microsoft-directed remediation promptly where the advisory confirms applicability.
- Restrict unnecessary access to Azure Data Explorer resources while remediation status is established.
- Limit sensitive data exposure according to existing least-privilege and data-governance policies.
Validation and detection
- Inventory Azure subscriptions and workloads using Azure Data Explorer.
- Compare each deployment with the applicability details in Microsoft’s advisory.
- Confirm Microsoft-directed remediation or service updates have been completed.
- Review relevant monitoring for unexpected unauthorized information access, without assuming specific indicators.
- Document deployments whose exposure cannot be determined from the published version information.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-200: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-21524 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N/E:P/RL:O/RC:C
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N/E:P/RL:O/RC:C2.84microsoftVulnerability scoring details
Base CVSS 3.1 score
7.4HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N/E:P/RL:O/RC:C
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- Azure Data Explorer Information Disclosure VulnerabilityCVE reference, microsoft · vendor-advisory, patch
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Exposure of Sensitive Information to an Unauthorized Actor
Exposure of Sensitive Information to an Unauthorized Actor represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.